Choose from the following options:

Follow these steps if the product has not been previously installed in this instance of Eclipse/IDE.

In Eclipse, click Help > Install New Software...

Get the update site location from the product download page.
On the download page, right-click on the Update Site URL button and
copy the link location to your clipboard.
Click on the product you wish to install to go to the download page:

In the Available Software dialog, enter the product's update site location and select all the items to install. Click Next to continue.

Click Next to confirm installation.

Read and accept the license agreement. To continue installing,
select "I accept the terms of the license agreement" and click Finish.